SO vs REINDERMAN

FROM CHESSDOM.COM

Wesley So - Reinderman
Round 7
Corus 2010
23.01.2010

Welcome to the Corus 2010 commentary on Chessdom.com! Today GM Buenaventura Bong Villamayor will cover for you live the game Wesley So - Reinderman. More about GM Villamayor here.

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GMBongVillamayor: Born 12 August 1972 Dimitri Reinderman became GM in 1998 and has a peak rating of 2573 his present rating. On a personal note the Dutch GM is a vegetarian and a dynamic enterprising player. His successes include =2nd in Corus C 2008 and same year =2nd in the Dutch Championships, 1st in Haarlem Premier 2009 and =2nd in Groningen Open. His repertoire is a wide variety...with the Sicilian Dragon and Pelikan as his main lines. He also employs the Center Counter, French Defense and an occasional Alekine's. He is also a frequent practitioner of the d6-e5 formation of Philidor/Pirc Modern Defense and King's Indian. Against d4 he exclusively plays the Dutch Defense. For GM Wesley So...since 2004 he only encountered the Dutch Defense once in his 2nd game match against GM Kamsky during the World Cup which ended in a draw.

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 d5 5.O-O Bd6 Ok, as heavily predicted a Dutch Defense by the Dutch GM! Stonewall Variation.

6.c4 c6 7.b3 Qe7 8.Bb2 Black's idea of Qe7 temporarily prevents white's Ba3. The Bd6 of black is an important piece in defending the dark squares. White aims to create a bind along the dark squares and minimise black's play especially the outpost of e4.

8... b6 Possibly Nbd2 or Nc3. This is still theory...with Reinderman playing it for the first time since 2004. The b7-b6 plans to develop the Bc8 immediately and possibly prepare Nbd7 and a long term c5. This b7-b6 plan is employed by Dutch practitioners GMs Nikolic, Moiseenko, Agdestein and Glek.

9.Nbd2 Bb7 White's Nbd2 is still theory and so as the reply Bb7. Now white can possibly continue Ne5...occupying the outpost e5.

10.Ne5 O-O 11.Rc1 Possibly a7-a5 by Black... to gain space on the queenside.

11... a5 Now there can be options here...Ndf3, Qc2, e3 or even Nd3.

12.e3 White's e3 strengthens d4 and f4...black can slowly complete development with Na6.
We are still in theory, but this line e3 by white is slow, Ndf3 or Nd3 is preferred. White's plan is to restrict Black's potential counterplay on the kingside and center by controlling e5 and f4. Black in turn should deploy his pieces in such a way that they don't get into each other, and anticipate possible pawn breaks opening up lines either the c-file or center.

12... Na6 Na6 by black adds protection to c7 and c5 squares... and the possible incursion on Nb4...

13.Qe2 Wesley's Qe2 is still theory! Now black can possibly continue with Nc7, Nb4 or Ne4...

13... a4 14.bxa4 Possibly, Wesley was not too familiar of the b7-b6 line...the Ndf3 earlier instead of e3 was statistically better.

14... Bxe5 15.dxe5 Nd7 Possibly a4-a5...giving back the pawn to isolate blacks...a5 bxa5; f4 etc. Or a5 Nac5, Nb3! The idea of 16.a5 is to close the a-file and to weaken the c5 square so that the a3-f8 diagonal can become a tactical weakness of black...

16.a5 Nac5 a5 Nac5; Nb3 Ba6; axb6! Bxc4; Rxc4 with compensation. There can follow: dxc4; Qxc4 with good activity for white's pieces.

17.Bc3 bxa5 We can say that the play of both sides will now concentrate on the queenside...the b-c files will be important

18.Nb3 Nxb3; axb3 dxc4; bxc4 a4 creates a passed pawn. White must be careful here, tactical possibilities along the f1-a6 diagonal and the e5 pawn.

18... Nxb3 19.axb3 Nc5 White has to defend b3 pawn and anticipate black's threats of Ba6...Rfb8. Clearly white is defending here and black's threats must be neutralised.

20.Qc2 Ne4 Possibly Ra1...attacking a5. If Nxc3; Qxc3, black's strong N is exchanged.

21.Bb2 Black can try dxc4; bxc4 a4...advancing his passed pawn.

21... a4 Black's a4...might be short after bxa4 followed by f3.

22.bxa4 Ba6 Now white's f3 can be considered.

23.f3 Interesting would be 23. f3 Ng5 24. cxd5 Bxf1 25. d6! White will have good compensation here, possibly a strong initiative for the exchange.

23... Ng5 24.cxd5 Bxf1 25.d6 If 25...Qa7 26. Kxf1 Qxe3 27. Re1 followed by f4 and white has some edge...
Seems 26. Bd4 is also ok...26...Qxa4 27. Qxa4 Rxa4 28. Kxf1.

25... Qa7 26.Bd4 Seems Black's Qxa4; Qxa4 Rxa4; Kxf1...white has good initiative here with a target on c6 and passed pawn...2 bishops control good squares.

26... Qa6 27.Rxf1 c5 28.Bxc5 Rfc8 d7 looks very strong. White maybe calculating d7 Rc7!; f4 Ne4; Bxe4 fxe4; Rd1 Rd8; Rd6! with big advantage... some ideas of f5, etc...

29.Rc1 White just needs to be careful here...clear advantage here due to passed pawn and two bishops.

29... Rc6 30. h4 Qc8 31. Qc3 Nf7 32. f4 with big advantage.

30.h4 Rac8 31.d7 Rd8 32.hxg5 Rxd7 Now white just needs to consolidate here.

33.f4 Rc8 34.Bf1 Black is very difficult here...his only chance is the pin along the c-file...

34... Qb7 35.Bc4 Re8 36.Bb5 1-0